Hi guys, IS it feasible to use a focal reducer with an F5 Newtonian. I have one I could borrow, so I might just try it, but at 0.5, it would give me F2.5 -...
HI Tom, F/5 is pretty fast for a newtonian. I would be happy with that. I am using an F/7. There are unfortunately no focal reducers I am aware of that are a...
Yes, and coma is bound to be a bigger problem as well. It did occur to me that while F2.5 is probably not practical, it might be possible for me to combine a...
Hi Tom, ... From: NewtonianReflector@yahoogroups.com [mailto:NewtonianReflector@yahoogroups.com]On Behalf Of Tom Nicolaides Sent: Thursday, August 04, 2005...
Yes, I have seen some amazing shots with that little scope. I was thinking of trying the focal reducer anyway. But I probably won't. It's an awful lot of...
... From: NewtonianReflector@yahoogroups.com [mailto:NewtonianReflector@yahoogroups.com]On Behalf Of Tom Nicolaides Sent: Friday, August 05, 2005 11:59 AM To:...
I sure will. Although I see that my friend with the reducer has it for sale on AM. If he hasn't sold it, I'll try it. tgn ... barlow, I ... would most...
I've posted some of the photographs that I took at Stellafane 2005 at http://www.astronomy.com/ASY/CS/forums/33/ShowForum.aspx These photos and some by fellow...
Hello everyone...I'm brand new here. I saw the link for this Newtonian group over on the Robo scope group and since I own an 8"f/6 Newtonian I dropped on over...
Those Stellafane pics are superb but for me the piece de resistance is the 12.5 inch Split ring mount Newtonian. I first saw this design when Joe Porter...
... I had a quick hunt for this without much success. Anyone know of any links to the original articles or is it too far back for the Web? I would be very...
Hi Jim, The page is below, Joe has updated it after 20 years, it cant be that long surely, still elegant after all those years, telescopes never grow old. ...
Hi all: I am new on this group and looking to share experiences with you guys. Currently I'm owner of couple of newtonian telescopes, first a Hardin Optical...
In a message dated 8/27/2005 5:31:20 A.M. Pacific Daylight Time, Newtoni anReflector@yahoogroups.com writes: I think my last resource is do the mirror by...
Given that you have an 8" f/4, is there any particular reason you want a 6" f/4, rather than say a 6" f/8? The 8" does the wide field star thing for you. It ...
Thank you for answer Larry The 8"f=4 is really good but heavy and 6"f=4 looks as nice "more- portable", same speed, telescope replacement. I agree with you I...
Hi group, I can't remember how to figure the maximum useful barlow magnification. Specifically I have a 10" f/7 and use barlows to image planets. 3x is no...
Thank you Dave: Amazing history in the PDF and smart way to solve the problem with short focal spherical mirror. I think the other option is build the 6"f=4...
Surprising you don't know anything about it. Why don't you just bid on ALL the 6" mirrors from Sylvan Company on eBay. I'm sure that'd give you a good start on...
Sorry Colten I need a couple of 8in for friends and was trying to win at least 1 auction but not possible until now (I lost about 5 previous and today I lost...
Hey Colten: I retracted bids and now many 8"f=4 mirrors are available for you. Hope this help Israel ... 1 ... and ... 6in ... with ... main ... can...
Anyone have other ways to make a EQ mount work at low Latitudes? http://www.qsl.net/kb7avt/CG4mod.htm (pics on webpage) The problem with telescope EQ mounts at...
The half pier adapters from Vixen and Orion are designed to allow the EQ-4/CG-5/GP mounts to work at low latitudes without additional modifications. ... From:...
The following link shows what various pier adapters/tripod extenders look like: http://www.teleskop-service.de/Antares/MontierungZub/montzub. tm#Saeulenaufsatz...
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